Pioneer-VSX49TXi-avr-sm(1)电路图 维修手册.pdf

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1、 ORDER NO. PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01

2、, Singapore 159936 PIONEER CORPORATION 2002 STANDBY/ON OFFON STANDBY DVD/LDTV/DVDSATVIDEO VIDEOAUDIO VCRVCR2VCR3CDTUNERPHONO MAC3 CD-R/ TAPE1/MD MULTI CH INPUT LISTENING MODE SELECTOR MASTER VOLUMEINPUT SELECTOR VSX-49TXi AUDIO/VIDEO MULTI-CHANNEL AMPLIFIER UPDOWN VSX-49TXi RRV2644 AUDIO/VIDEO MULTI

3、-CHANNEL RECEIVER VSX-49TXi THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower RequirementRemarks VSX-49TXIKU/CAAC120V For details, refer to Important symbols for good services . T-ZZR AUG. 2002 printed in Japan RadioFans.CN 收音机爱 好者资料库 VSX-49TXi2 1234 1234 C D F A B E SA

4、FETY INFORMATION This service manual is intended for qualified service technicians ; it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this

5、 manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technici

6、an. WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health & Safety Code Section 25249.6 Proposition 65 NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fas

7、t operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must be of identical designation. REMARQUE (POUR MODLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pices de remplacement doivent avoir

8、 la mme dsignation. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. 2. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in the appliance have special safety related charac

9、teristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Elec

10、trical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts lis

11、t in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Servic

12、e Manual may be obtained at a nominal charge from PIONEER. 1. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connectin

13、g a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn th

14、e AC power switch on. Any current measured must not exceed 0.5mA. (FOR USA MODEL ONLY) Leakage current tester Reading should not be above 0.5mA Device under test Test all exposed metal surfaces Also test with plug reversed (Using AC adapter plug as required) Earth ground AC Leakage Test RadioFans.CN

15、 收音机爱 好者资料库 VSX-49TXi3 5678 56 7 8 C D F A B E Important symbols for good services In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them: 2. Adjustments To keep

16、 the original performances of the product, optimum adjustments or specification confirmation is indispensable. In accordance with the procedures or instructions described in this manual, adjustments should be performed. 3. Cleaning For optical pickups, tape-deck heads, lenses and mirrors used in pro

17、jection monitors, and other parts requiring cleaning, proper cleaning should be performed to restore their performances. 5. Lubricants, glues, and replacement parts Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying glue may lead to fail

18、ures or troubles in the product. By following the instructions in this manual, be sure to apply the prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed ones should be used. 4. Shipping mode and shipping screws To protect the product f

19、rom damages or failures that may be caused during transit, the shipping mode should be set or the shipping screws should be installed before shipping out in accordance with this manual, if necessary. 1. Product safety You should conform to the regulations governing the product (safety, radio and noi

20、se, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual. RadioFans.CN 收音机爱 好者资料库 VSX-49TXi4 1234 1234 C D F A B E CONTENTS SAFETY INFORMATION.2 1. SPECIFICATIONS .6 2. EXPLODED VIEWS AND PARTS LIST.8 2.1 PACKING .8 2.2 EXT

21、ERIOR SECTION.10 2.3 CHASSIS SECTION .12 2.4 REAR PANEL SECTION.14 2.5 HEAT SINK SECTION.16 2.6 FRONT PANEL SECTION .18 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM.20 3.1 BLOCK DIAGRAM.20 3.2 OVERALL WIRING DIAGRAM.28 3.3 FM/AM TUNER MODULE.30 3.4 A/V I/O ASSY.32 3.5 COMPOSITE ASSY.34 3.6 S-VIDEO ASSY.36

22、 3.7 V-CONVERT ASSY.38 3.8 COMPONENT ASSY.40 3.9 VIDEO CON., MIC AMP, MIC, FRONT A/V and H.P. ASSYS .42 3.10 ANALOG IN & A/D ASSY(1/3).44 3.11 ANAALOG IN & A/D ASSY(2/3).46 3.12 ANAALOG IN & A/D ASSY(3/3).48 3.13 DISPLAY, INPUT SEL, MULTI JOG and VOL ASSYS .50 3.14 VR & PRE OUT ASSY(1/3).52 3.15 VR

23、& PRE OUT ASSY(2/3).54 3.16 VR & PRE OUT ASSY(3/3).56 3.17 MOTHER ASSY.58 3.18 DSP ASSY(1/5).60 3.19 DSP ASSY(2/5).62 3.20 DSP ASSY(3/5).64 3.21 DSP ASSY(4/5).66 3.22 DSP ASSY(5/5).68 3.23 DSP3 ASSY.70 3.24 DAC10 ASSY(1/2).72 3.25 DAC10 ASSY(2/2).74 3.26 POWER AMP(L) and POWER AMP(C) ASSYS.76 3.27 P

24、OWER AMP(R), POWER AMP(BR) and POWER AMP(G) ASSYS.78 3.28 LOCAL SUPPLY ASSY.80 3.29 AC PRIMARY, POWER SW, SP(A), FL SUPPLY and STANDBY ASSYS .82 3.31 1394 MODULE(1/2) ASSY.86 3.32 1394 MODULE(2/2) ASSY.88 4. PCB CONNECTION DIAGRAM .90 4.1 FM/AM TUNER MODULE.91 4.2 A/V I/O ASSY.92 4.3 COMPOSITE ASSY.

25、93 4.4 S-VIDEO ASSY.94 4.5 V-CONVERT ASSY.95 4.6 COMPONENT ASSY.96 4.7 VIDEO CONNECT ASSY.97 4.8 MIC AMP, MIC, FRONT A/V and HEADPHONE ASSYS.98 4.9 ANALOG IN & A/D ASSY .100 4.10 DISPLAY, INPUT SEL, MULTI JOG, FL SUP. and STANDBY ASSYS.102 4.11 VR & PRE OUT ASSY .106 4.12 MOTHER ASSY.108 4.13 DSP AS

26、SY.112 4.14 DAC10 ASSY.114 4.15 DSP3 ASSY.116 4.16 POWER AMP(L) and POSISTER(L) ASSYS.117 4.17 POWER AMP(R) and POSISTER(R) ASSYS.119 4.18 POWER AMP(C), POWER AMP(BR) and POWER AMP(G) ASSYS.121 4.19 LOCAL SUPPLY and DSP DIODE ASSYS.122 4.20 AC PRIMARY, POWER SW and SP(A) ASSYS.124 4.21 TRANS(A), TRANS(B), DIODE and FUSE ASSYS .